DEVELOPMENT OF MATHEMATICAL MODELS TO ANALYSE AND PREDICT THE WELD BEAD GEOMETRY IN SUBMERGED ARC WELDING OF LOW CARBON ALLOY STEEL

Abstract

Submerged arc welding is a high quality welding process, capable of giving strong welds in thick plates without the need of edge preparation to certain thickness which other processes cannot do without. The process can be used in semi or fully automated modes and finds extensive use in fabrication industry. The present work is focused on investigating the effects of important input parameters like wire feed rate, voltage and welding speed on the response parameters like penetration, weld width, reinforcement. WPSF and WRFF respectively. An attempt has been made to develop mathematical models by using central composite rotatable design and the models were optimized by using response surface methodological technique.